.deep-dives-zone {
    display: grid;
    gap: 1.25rem;
}

.deep-dives-zone__title {
    margin: 0;
    text-align: start;
}

.deep-dives-zone__intro {
    margin: 0;
    max-inline-size: 65ch;
    text-align: start;
}

.deep-dives-index__heading {
    margin-block: 1.5rem 0.75rem;
    margin-inline: 0;
    font-size: 1.25rem;
    text-align: start;
}

.deep-dives-index__list {
    display: grid;
    gap: 0.75rem;
    list-style: none;
    margin-block: 0;
    margin-inline: 0;
    padding: 0;
}

.deep-dives-index__item[data-offline-unavailable="true"] {
    background: #f6f8fa;
}

.deep-dives-index__item {
    border: 1px solid var(--cluster-border);
    border-radius: var(--cluster-radius);
    padding-block: 0.875rem;
    padding-inline: 1rem;
    background: #ffffff;
}

.deep-dives-index__link {
    align-items: baseline;
    color: inherit;
    display: grid;
    gap: 0.35rem;
    text-decoration: none;
}

.deep-dives-index__title {
    font-size: 1.125rem;
    font-weight: 600;
    text-align: start;
}

.deep-dives-index__summary,
.deep-dives-index__meta {
    margin: 0;
    color: #57606a;
    font-size: 0.9375rem;
    text-align: start;
}

.deep-dives-index__item[data-read="true"] .deep-dives-index__meta::after {
    content: " · Read";
    font-weight: 600;
}

.deep-dive-reader {
    display: grid;
    gap: 1.25rem;
}

.deep-dive-reader__header {
    display: grid;
    gap: 0.5rem;
    max-inline-size: 65ch;
}

.deep-dive-reader__back,
.deep-dive-reader__meta,
.deep-dive-reader__summary {
    margin: 0;
    text-align: start;
}

.deep-dive-reader__title {
    margin: 0;
    font-size: 1.75rem;
    text-align: start;
}

.deep-dive-reader__intro-actions,
.deep-dive-reader__summary-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.deep-dive-reader__toc {
    max-inline-size: 65ch;
    padding-block: 0.75rem;
    padding-inline: 1rem;
    border: 1px solid var(--cluster-border);
    border-radius: var(--cluster-radius);
    background: #f6f8fa;
}

.deep-dive-reader__toc-heading {
    margin-block: 0 0.5rem;
    margin-inline: 0;
    font-size: 1rem;
    text-align: start;
}

.deep-dive-reader__toc-list {
    display: grid;
    gap: 0.35rem;
    list-style: none;
    margin-block: 0;
    margin-inline: 0;
    padding: 0;
}

.deep-dive-reader__toc-link {
    color: var(--shell-link);
    text-align: start;
    text-decoration: underline;
}

.deep-dive-reader__sections {
    display: grid;
    gap: 2rem;
    max-inline-size: 65ch;
}

.deep-dive-section__heading {
    margin-block: 0 0.75rem;
    margin-inline: 0;
    font-size: 1.375rem;
    scroll-margin-block-start: 1rem;
    text-align: start;
}

.deep-dive-section__listen {
    margin-block: 0 0.75rem;
    margin-inline: 0;
}

.deep-dive-block {
    margin-block: 0 1rem;
    margin-inline: 0;
}

.deep-dive-block__prose,
.deep-dive-block__callout-body,
.deep-dive-block__caption,
.deep-dive-block__diagram-text {
    margin-block: 0 0.75rem;
    margin-inline: 0;
    overflow-wrap: anywhere;
    text-align: start;
}

.deep-dive-block__callout {
    border-inline-start: 4px solid var(--shell-link);
    padding-block: 0.75rem;
    padding-inline: 1rem;
    background: #f6f8fa;
    border-radius: var(--cluster-radius);
}

.deep-dive-block__callout-title {
    margin-block: 0 0.5rem;
    margin-inline: 0;
    font-size: 1rem;
    font-weight: 600;
    text-align: start;
}

.deep-dive-block__example {
    border: 1px solid var(--cluster-border);
    border-radius: var(--cluster-radius);
    padding-block: 0.75rem;
    padding-inline: 1rem;
    display: grid;
    gap: 0.5rem;
}

.deep-dive-block__adyghe {
    font-family: var(--font-family-danef);
    font-size: 1.25rem;
    overflow-wrap: anywhere;
    text-align: start;
}

.deep-dive-block__translation {
    color: #57606a;
    margin: 0;
    overflow-wrap: anywhere;
    text-align: start;
}

.deep-dive-block__example-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.deep-dive-block__table-wrapper {
    overflow-x: auto;
    max-inline-size: 100%;
}

.deep-dive-block__table {
    border-collapse: collapse;
    inline-size: 100%;
    margin-block: 0;
    text-align: start;
}

.deep-dive-block__table caption {
    caption-side: top;
    font-weight: 600;
    margin-block-end: 0.5rem;
    padding-block: 0;
    padding-inline: 0;
    text-align: start;
}

.deep-dive-block__table th,
.deep-dive-block__table td {
    border: 1px solid var(--cluster-border);
    padding-block: 0.5rem;
    padding-inline: 0.75rem;
    vertical-align: top;
}

.deep-dive-block__table th {
    background: #f6f8fa;
}

.deep-dive-block__checkpoint {
    border: 1px solid var(--cluster-border);
    border-radius: var(--cluster-radius);
    padding-block: 0.5rem;
    padding-inline: 0.75rem;
}

.deep-dive-block__checkpoint summary {
    cursor: pointer;
    font-weight: 600;
    min-block-size: 2.75rem;
    padding-block: 0.5rem;
    text-align: start;
}

.deep-dive-block__checkpoint-answer {
    margin-block: 0.75rem 0;
    margin-inline: 0;
    overflow-wrap: anywhere;
    text-align: start;
}

.deep-dive-block__bridge,
.deep-dive-reader__practice-item {
    border: 1px solid var(--cluster-border);
    border-radius: var(--cluster-radius);
    padding-block: 0.75rem;
    padding-inline: 1rem;
}

.deep-dive-block__bridge-label,
.deep-dive-reader__practice-label {
    display: block;
    font-weight: 600;
    margin-block-end: 0.35rem;
    text-align: start;
}

.deep-dive-block__bridge-description,
.deep-dive-reader__practice-reason {
    margin-block: 0 0.5rem;
    margin-inline: 0;
    color: #57606a;
    text-align: start;
}

.deep-dive-reader__play,
.deep-dive-reader__mark-read {
    align-items: center;
    background: #ffffff;
    border: 1px solid var(--cluster-border);
    border-radius: var(--cluster-radius);
    color: inherit;
    cursor: pointer;
    display: inline-flex;
    font: inherit;
    justify-content: center;
    min-block-size: 2.75rem;
    min-inline-size: 2.75rem;
    padding-block: 0.5rem;
    padding-inline: 1rem;
}

.deep-dive-reader__mark-read[data-state="read"] {
    border-color: #1a7f37;
}

.deep-dive-reader__practice-list {
    display: grid;
    gap: 0.75rem;
    list-style: none;
    margin-block: 0;
    margin-inline: 0;
    padding: 0;
}

.deep-dive-reader__footer {
    display: grid;
    gap: 1rem;
    max-inline-size: 65ch;
}

.deep-dive-reader__status {
    min-block-size: 1.25rem;
    overflow-wrap: anywhere;
    text-align: start;
}

@media (max-width: 480px) {
    .deep-dive-block__table--reflow thead {
        display: none;
    }

    .deep-dive-block__table--reflow tr {
        border: 1px solid var(--cluster-border);
        border-radius: var(--cluster-radius);
        display: block;
        margin-block-end: 0.75rem;
        padding-block: 0.5rem;
        padding-inline: 0.5rem;
    }

    .deep-dive-block__table--reflow td {
        border: 0;
        display: block;
        padding-block: 0.35rem;
        padding-inline: 0.5rem;
    }

    .deep-dive-block__table--reflow td::before {
        content: attr(data-col-label) ": ";
        font-weight: 600;
    }
}

@media (prefers-reduced-motion: no-preference) {
    .deep-dive-reader__mark-read,
    .deep-dive-reader__play {
        transition: background-color 120ms ease-out, border-color 120ms ease-out;
    }
}